Post Graduate student, Department of Pediatric and Preventive Dentistry, Chettinad Dental College and Research Institute, Chennai, India, 603103
Corresponding Author: email@example.com
Head of the Department, Department of Pediatric and Preventive Dentistry, Chettinad Dental College and Research Institute, Chennai, India, 603103
Professor, Department of Pediatric and Preventive Dentistry, Chettinad Dental College and Research Institute, Chennai, India, 603103;
Corresponding Author: Dr.firstname.lastname@example.org
Department of Pedodontics and Preventive Dentistry, Chettinad Dental College & Research Institute, Rajiv Gandhi Salai, Kelambakkam, Kancheepuram District, Tamil Nadu – 603 103, India
Deciduous tooth is of great significance as it maintains the space for permanent dentition. Conventional pulpectomy procedure is performed with stainless steel hand files. The rigid nature of these files may cause bizarre canal shapes. The time taken during biomechanical preparation may lead to further worsening of the patient's cooperation, especially in Pediatric Endodontics. Though rotary file system has several advantages, it fails to clean the curved and oval shaped canals efficiently. The Self-Adjusting File (SAF) introduces a new era in Pediatric Endodontics by performing the conventional steps of shaping and cleaning at the same time. The SAF is a cylindrical hollow file that adjusts to the root canal in three dimensions and is a solitary file system formed of Ni-Ti matrix. The SAF is under continual irrigation through an irrigation device and works in an in-and-out vibration propelled by a handpiece. The SAF system has retained the original contour of the canals without dentinal cracks in primary teeth. The aim of this review is to describe design of the SAF, operational parameters and features, and advantages of SAF over other file systems in Pediatric Endodontics.
 Tomson PL. Contemporary Cleaning and Shaping of the Root Canal System. primary dental journal. 2016;5(2):8.
 Schilder H. Cleaning and shaping the root canal. Dental Clinics of North America. 1974;18(2):269-96.
 Bagherian A, Kalhori KAM, Sadeghi M, Mirhosseini F, Parisay I. An in vitro study of root and canal morphology of human deciduous molars in an Iranian population. 2010;52(3):397-403
 Wu MK, Wesselink PR, Walton RE. Apical terminus location of root canal treatment procedures. Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology. 2000 Jan 1;89(1):99-103.
 Bolan M. Histopathologic study of physiological and pathological resorptions in human primary teeth. 2007;104(5):6.
 Beltrame APCA, Triches TC, Sartori N, Bolan M. Electronic determination of root canal working length in primary molar teeth: an in vivo and ex vivo study. International Endodontic Journal. 2011;44:402-406.
 Thompson SA. An overview of nickel–titanium alloys used in dentistry. International Endodontic Journal. 2000;33:297-310
 Walton RE, Torabinejad M. Principles and practice of endodontics. WB Saunders company; 1996
 Barr ES, Kleier DJ, Barr NV. Use of nickel-titanium rotary files for root canal preparation in primary teeth. Pediatric Dentistry. 2000;22(1):77.
Shashikiran N, Subbareddy V, Nagaratna P. In vitro comparison of NiTi rotary instruments and stainless steel hand instruments in root canal preparations of primary and permanent molar. J Indian Soc Pedod Prev Dent. 2006;24(4):186.
Weine FS, Kelly RF, Lio PJ. The effect of preparation procedures on original canal shape and on apical foramen shape. Journal of endodontics. 1975;1(8):255-62. .
Schäfer E, Schlingemann R. Efficiency of rotary nickel-titanium K3 instruments compared with stainless steel hand K-Flexofile. Part 2. Cleaning effectiveness and shaping ability in severely curved root canals of extracted teeth: K3 files - shaping and cleaning. International Endodontic Journal. 2003 Mar;36(3):208–17.
Baugh D, Wallace J. The Role of Apical Instrumentation in Root Canal Treatment: A Review of the Literature. Journal of Endodontics. 2005 May;31(5):333–40.
 Ricucci D, Lin LM, Spångberg LSW. Wound healing of apical tissues after root canal therapy: a long-term clinical, radiographic, and histopathologic observation study. Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology. 2009 Oct;108(4):609–21.
Ricucci, Langeland. Apical limit of root canal instrumentation and obturation, part 2. A histological study. International Endodontic Journal. 2002 Jan 4;31(6):394–409.
 Llewelyn DR. The pulp treatment of primary dentition. International journal of Pediatric Dentistry. 2000; 10: 248-252
 Baxter S, Phan K-M, Hülsmann M. In vitro evaluation of root canal wall cleanliness in primary molars after preparation with Self-Adjusting-File (SAF) or Mtwo NiTiinstruments and final irrigation. European Journal of Paediatric Dentistry. 2021;22(1):10– 4.
 Selvakumar H, Anandhan V, Thomas E, Swaminathan K, Vijayakumar R. Evaluation of canal transportation and centering ability of K 3 (0.02%) and K 3 (0.04%) with hand K files in primary teeth using spiral computed tomography. J Indian Soc Pedod Prev Dent. 2014;32(4):286.
Yoshimine Y, Ono M, Akamine A. The Shaping Effects of Three Nickel-Titanium Rotary Instruments in Simulated S-Shaped Canals. Journal of Endodontics. 2005 May;31(5):373–5.
 Metzger Z, Teperovich E, Zary R, Cohen R, Hof R. The Self-adjusting File (SAF). Part 1: Respecting the Root Canal Anatomy—A New Concept of Endodontic Files and Its Implementation. Journal of Endodontics. 2010 Apr;36(4):679–90.